Here is my review:
I recieved a cheque to try this service
The idea of this service is very useful, unique and helpful.
It acts like a real cheque online.

Things I liked:
. The variety of actions (currency exchange, the expire, the lock, edit the details...),
. The anonymity
. The way of withdrawing the cheque (like you can get the value of the cheque in BTC, ETH)
. The site works without registration
. The duration of converting the cheque to your crypto wallet
. The support
. The design of the website
. The telegram bot idea
. The Android app